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US4012229A
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Ductile cobalt-base alloys
Assignee: Haynes International Inc
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Filing: 1972-10-10
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Granted: 1977-03-15
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Expires: 1992-10-10
Abstract
Abstract A ductile cobalt-base alloy having high strength is provided having molybdenum in the range 1% to 8% molybdenum by weight.
Inventors
- 👤 Robert B. Herchenroeder
- 👤 Coleman M. Augustine, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:57
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
62 words
A cobalt-base alloy characterized by improved ductility at high temperatures of about 2000° F. and consisting essentially of about 15 to 30% chromium, about 10 to 30% nickel, an effective amount from about 1 to 8% molybdenum to impart ductility, up to about 10% tungsten, about 8 to 20% tantalum and the balance cobalt with incidental modifiers and impurities in ordinary amounts.
Claim 2
Dependent Claim
62 words
A cobalt-base alloy characterized by improved ductility at high temperatures of about 2000° F. and consisting essentially of about 15 to 30% chromium, about 10 to 30% nickel, an effective amount from about 1 to 8% molybdenum to impart ductility, up to about 10% tungsten, about 8 to 20% tantalum and the balance cobalt with incidental modifiers and impurities in ordinary amounts.
Claim 3
Dependent Claim
43 words
An alloy as claimed in claim 1 consisting essentially of about 18-27% chromium, about 15-28% nickel, about 1 to 8% molybdenum, up to about 8% tungsten, about 8 to 20% tantalum and the balance cobalt with incidental modifiers and impurities in ordinary amounts.
Claim 4
Dependent Claim
30 words
An alloy as claimed in claim 1 consisting essentially of about: ______________________________________
Cr 18-25
Ni 18-25
Mo 2-6
W 0-6
Ta 8-20
Co Balance plus incidental
modifiers and impurities
______________________________________
References Cited (Backward Citations)
US3366478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |